A visitor survey was commissioned by Natural England to get an idea of who uses Therfield Heath and what the visitor numbers are. The survey did not take account of use in the evening, in the height of summer or on any event days, so the figures in the report represent an absolute minimum. Read the full report here.
In 2018, a geophysical survey of the long barrow on Therfield Heath was carried out by researchers from the University of Leicester. See the report here.